Complete the square to solve the equation below.x2 - 10x - 2 = 17A.x = 5 + 5555 ; x = 5 - 5555 B.x = 5 + 4444 ; x = 5 - 4444 C.x = 6 + 3030 ; x = 6 - 3030 D.x = 5 + 2929 ; x = 5 - 2929 SUBMITarrow_backPREVIOUS
Question
Complete the square to solve the equation below.x2 - 10x - 2 = 17A.x = 5 + 5555 ; x = 5 - 5555 B.x = 5 + 4444 ; x = 5 - 4444 C.x = 6 + 3030 ; x = 6 - 3030 D.x = 5 + 2929 ; x = 5 - 2929 SUBMITarrow_backPREVIOUS
Solution
To solve the equation by completing the square, follow these steps:
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First, we need to rewrite the equation in the form of (x - h)² = k. To do this, we need to move the constant term to the right side of the equation. So, we get x² - 10x = 17 + 2, which simplifies to x² - 10x = 19.
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Next, we need to complete the square on the left side of the equation. We do this by adding the square of half the coefficient of x to both sides of the equation. Half of -10 is -5, and (-5)² = 25. So, we get (x² - 10x + 25) = 19 + 25, which simplifies to (x - 5)² = 44.
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Now, we can solve for x by taking the square root of both sides of the equation. We get x - 5 = ±√44.
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Finally, we solve for x by adding 5 to both sides of the equation. We get x = 5 ± √44.
So, the solutions to the equation are x = 5 + √44 and x = 5 - √44. Therefore, the correct answer is B. x = 5 + √44 ; x = 5 - √44.
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